Finding the Fourth Proportional to 13,719, 18,932.25 and 7,431.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,719 : 18,932.25 = 7,431.42 : x
2. Step 2: Convert to fraction form
   13,719/18,932.25 = 7,431.42/x
3. Step 3: Cross multiply
   13,719x = 18,932.25 × 7,431.42
4. Step 4: Simplify right side
   13,719x = 140,693,501.30
5. Step 5: Solve for x
   x = 140,693,501.30/13,719
6. Step 6: Final answer
   x = 10,255.38